Domestos is bringing new technology to bathrooms with its Turbo Fresh Rim Block.

A category first, say the makers, the loo freshener provides cleaning by rotating  under the pressure of the water to evenly distribute the cleaning formula around the toilet bowl, with the added benefit that consumers can see the rim block working.

The rim block is available in two variants: lemon and Ocean. It promises to remove dirt and 
prevent limescale while giving off a fresh fragrance.

The product has been exclusive to Sainsbury since October, but is now rolling out nationally. Both variants have an rrp of £2.30.